A.
It lets the reader know what the stakes of the story are
Ending the adjectives with -ed is not needed, so those answers are out. As for the numbers, the rule is usually that numbers one through nine are spelled out whereas number 10 and up are written in numbers. That said, you do not hyphenate the number with the word, so four-letter word would be correct.
Where
Can you tell
The place name
I may
Help you
Subject + intransitive verb OR subject + transitive verb + direct object. These are the two most common.
Explanation:
The force is not involved in changing of colour of an object. It is an affect of chemical or organic reaction. But the change in direction, change in speed and change in shape and size are affected by the force.
Therefore, option IV. is the correct answer
